Picsaw vs Nitra
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Picsaw
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这是本地长图工作室。把连续截屏在设备上对齐、缝合成完整长图,再标注、打码、加水印后导出。全部处理在本机完成,不上传、不建账号、不用于云端训练。 【适合做什么】 • 聊天记录、网页教程、条款说明:连续截屏后织成一张长图或导出 PDF • 产品改版、菜单对比:两张图并排合成 • 发帖分享:超长图拆成多页,适配常见比例 • 合同 / 菜单识字:端侧 OCR,文字可复制 • 录屏转长图:导入系统录屏,抽帧去重后再织合 【工作室】 • 智能织合:自动检测相邻截图重叠区域 • 精细缝合:手动拖动接缝,支持纵向 / 横向 • 离应用连拍:离开织卷用系统截屏,回来自动收集织合 • 自由拼版:多图排版,适合对比与说明书 • 长卷 PDF:织合后导出多页 PDF 【编辑与导出】 • 画笔、箭头、方框、文字标注 • 马赛克打码、文字水印、边框与设备外壳 • 导出 PNG / JPEG / PDF,保存到相册或系统分享 • 历史长卷保存在 App 沙盒,桌面组件可预览最近作品 【工具箱】 图内识字 · 长图拆页 · 双图对比 · 格式工坊 · 隐私擦除(人脸打码)· 录屏转长图 · 批量织合 · 去重页眉页脚 【隐私】 读取相册只为选择你主动提供的截图 / 录屏;写入相册只在你点击保存时发生。离应用连拍只识别你主动保存的「屏幕截图」,不会后台偷截其他 App。通知权限可选,用于提醒已捕获新截屏。当前版本不含广告、统计 SDK 与账号系统。 需要 iOS 17.0 或更高版本。问题与建议:mayeye7890@126.com
Nitra
Enhance your photos with advanced HDR editing. This app offers intelligent analysis for natural HDR starting points and real-time adjustments. Explore various HDR formats and bring depth to everyday shots, RAW images, and Live Photos.
- Intelligent HDR analysis
- Real-time HDR rendering
- Multiple HDR formats (HEIC, JPEG, PQ, HLG)
- HDR Live Photo editing
- Photo editing extension
- Batch export
- Reversible editing
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Bring More Depth to Light. Nitra is an HDR photo editor designed to bring brighter, richer light to your photos. From everyday photos and RAW images to Live Photos, Nitra gives you an intuitive way to create, refine, and rediscover your photos in HDR. Select a photo and Nitra automatically analyzes the image to create a natural HDR starting point. Every adjustment is rendered in real time, so you can shape the light and see the result instantly. INTELLIGENT HDR EDITING • Automatically analyzes each photo for a natural HDR starting point • Edit photos and RAW images with real-time HDR rendering • Fine-tune light and highlights with intuitive controls • Explore HDR Styles for different looks and moods MULTIPLE HDR FORMATS Choose the HDR format that best fits your device or workflow: • Adaptive HDR (HEIC) — optimized for the Apple ecosystem • Legacy HDR (JPEG) — better compatibility with social platforms • Ultra HDR (JPEG) — ISO-standard Gain Map HDR • PQ and HLG — single-layer HDR for professional workflows Adaptive HDR, Legacy HDR, and Ultra HDR are available for free. HDR LIVE PHOTOS Bring HDR light and depth to your Live Photos. Nitra can enhance the still image in HDR, while Nitra Pro extends HDR processing to the motion as well for a complete HDR Live Photo experience. BUILT INTO YOUR PHOTO WORKFLOW • Edit directly from the Photos app with the Nitra photo editing extension • Send photos to Nitra quickly with the action extension • Preserve adjustment information for reversible editing • Edit multiple photos and apply shared adjustments • Batch export multiple photos REVISIT YOUR PHOTOS Some photos deserve to be seen again. Revisit brings photos you've edited with Nitra back into an immersive HDR viewing experience. Browse at your own pace or let your photos flow automatically, and rediscover the light and moments you've captured. NITRA PRO Upgrade to Nitra Pro to unlock: • Full HDR Live Photos with HDR motion • Higher-quality HDR exports • Unlimited multi-photo editing and batch export • Professional HDR tools, including PQ, HLG, and the HDR histogram • Exports without the Nitra watermark PRIVACY FIRST Nitra requires no account. Photo analysis, RAW processing, HDR rendering, and exporting are performed entirely on your device. Your photos are never uploaded to a server. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getnitra.app/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Picsaw at none against Nitra's 3. On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Nitra sells 3 in-app purchases, starting at $1.99 per month. Picsaw asks for nothing beyond the download.
| Parameter | Picsaw | Nitra |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 10 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 3 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | 叶叶 马 | 峥 王 |
In-app purchases
Picsaw
No in-app purchases
Nitra
- Nitra Pro Monthly$1.991 Month
- Nitra Pro Yearly7 Days trial$8.991 Year
- Nitra Pro Lifetime$19.99









